Mathematics 90 Physics 45 Calculus 32 Algebra 25 Computer science 23 Molecular biology 14 Chemistry 13 Biophysics 12 Engineering 12 Inference 12 Operations research 12 Biochemistry 11 Functions of complex variables-- Analysis-- Mathematics 11 Genetics 11 Stochastic Processes 11 Analysis-- Mathematics 10 Bioinformatics 10 Computer 10 PHYSICAL CHEMISTRY 10 Software engineering 9 Biology 8 Formal languages 8 Graph theory-- Mathematics 8 Functional analysis 7 Pharmacology and Toxicology 7 Probability Theory 7 Probability and Statistics 7 Graph theory 6 Mechanics 6 Numerical analysis 6